1.3 brightness Mode--press once for 4 LED lights(Dim),press twice for 24 LED lights(Bright), or press three times for 28 LED lights(Super Bright).Suit your need for different brightness on different occasions. 2.Convenient--No need for extra tools,easy to clamp to your umbrella with the built-in auto adjustable strong clamp,also can be hung anywhere using the two hooks,pole mounted,fit poles with a diameter of approximately 0.86'' to 1.81''. 3.Energy-saving and Bright--With 28 energy-saving LED bulbs,led energy saving and environmental friendly. 4.Multiple functions--Suitable for camping,BBQ,playing CARDS,or lying on your leisure chair in the evening with your families or friends. 5.Available electrical source--Requires 4*AA batteries (NOT INCLUDED),which can be easily purchased in common shops. Easy to carry and prepare for batteries backup.